<Item type="Simple ECO Affected Item" action="add" id="@1">
 <source_id>@2</source_id>
 <related_id>
  <Item type="Affected Item" action="add" id="@3">
   <action>@4</action>
   <interchangeable>@5</interchangeable>
   <affected_id>@6</affected_id>
   <new_item_id>@7</new_item_id>
  </Item>
 </related_id>
</Item>